John clark



(No Model.)

JIGLARK.

PIPE WRENCH. No. 367,596. Patented Aug. 2, 1887.

W/T/VESSES: INVENTOR (faMW .7070726Zar%.

ATTORNEYS is a section in the plane a: m, Fig. I.

PATENT OFFICE.

JOHN CLARK, OF BROOKLYN, NEW

YORK, Assrenon OF ONE-HALF To MICHAEL GILMARTIN, OF SAME PLACE.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No, 367,596, dated August 2,1887.

Application filed April 21, 1587. Serial No. 235,659. (No model.)

T0 at whom it may concern.-

Be it known that I, JOHN CLARK, a citizen of the United States, residing at Brooklyn, (Green Point,) in the county of Kings and State of New York, have invented new and useful Improvements in Piperenches, of which the following is a specification.

This invention relates to improvements in pipe-wrenches'as set forth in the following specification and claims, and illustrated in the accompanying drawings, in which- Figure l is aside elevation of, apipe-wrench. Fig. 2 is a plan view ofa pipe-wrench. Fig. 3 Fig. 4 is a detail perspective View of one of the jaws.

Similar letters indicate corresponding parts.

In the drawings, the letter A designates a shank or handle having a recess,b,and aforked end, a a. In the recess 1) is placed the shank h of a jaw, O. A pivot, F, holds thejaw Oin place while allowing the jaw O a certain play or motion. The jaw C is provided with engaging devices or posts 0.

To the shank A are secured attaching devices or eyes (I, to which are secured chains D. Another jaw, G, is secured to the shank A by means of a pivot, H, and a post, K. The pivot H is inserted into the shank A and into the eye or perforation I of the jaw G. The post K enters a. suitable recess in the shank A. The jaw G has a roughened bearing-edge or teeth, L, as seen in Fig. 4.

As the jaws O G can be removed from the device by removing the pivots F 11, said jaws O G can be readily replaced when broken or worn, and said jaws can alsobe formed of more durable material than the shank A, as said jaws O G may be exposed to greater strain than other parts of the device.

\Vhen a pipe, 13, has been brought into contact with the jaw G and the fork ca, as seen in Fig. 1, the chains D are drawn tightly about said pipe, and said chains have their free portions brought into engagement with the engaging devices 0 of the jaw C. To tighten the chains still further about the pipe B, awedge, E, can be driven into a suitable recess, 9, in the shank A, so that said wedge will cause the jaw G to move, so as to tighten the chains D about the pipe B.

The pipe 13 will thus be securely held to the fork a and to the engaging face or teeth L of the jaw G. Said pipe B can then be moved by power applied to the shank A.

WV hat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a shank or handle, A, having a reinovablejaw, G, and a chain, D,

\Vitnesses:

W. O. HAUEF, A. FABER no FAUR, Jr.

oi'a movahlejaw, G,having engaging devices 0, 

